Выполним действия по порядку:
a) $$ (96 + 105) ∶ 63 $$
$$ 96 + 105 = 201 $$
$$ 201 ∶ 63 = 3 $$
б) $$ 4 × (350 - 456 ∶ 8) $$
$$ 456 ∶ 8 = 57 $$
$$ 350 - 57 = 293 $$
$$ 4 × 293 = 1172 $$
в) $$ 5632 ∶ 512 + 4256 ∶ 38 - (32 - 390 ∶ 15) $$
$$ 390 ∶ 15 = 26 $$
$$ 32 - 26 = 6 $$
$$ 5632 ∶ 512 = 11 $$
$$ 4256 ∶ 38 = 112 $$
$$ 11 + 112 - 6 = 117 $$
г) $$ 3124 ∶ (3 × 504 - 4 × 307) + 10403 ∶ 101 $$
$$ 3 × 504 = 1512 $$
$$ 4 × 307 = 1228 $$
$$ 1512 - 1228 = 284 $$
$$ 3124 ∶ 284 = 11 $$
$$ 10403 ∶ 101 = 103 $$
$$ 11 + 103 = 114 $$
Ответ: